Mts Series 647 Hydraulic Wedge Grips Instrukcja Użytkownika

Series 647 Hydraulic Wedge Grips ReferenceManualAxial Grips Axial-Torsional Grips All-Temperature Grips100-027-131 N be certain.

After you callMTS logs and tracks all calls to ensure that you receive assistance for your problem or request. If you havequestions about the status o

PrefaceBefore You BeginSafety first!Before you use your MTS product or system, read and understand the safety information provided with yoursystem. Im

Caution notices indicate the presence of a hazard with a low level of risk which, ifignored, could cause moderate or minor personal injury or equipmen

IntroductionTopics:•Overview Reference...

Overview ReferenceThe MTS Series 647 Hydraulic Wedge Grips grasp and hold a specimen in place during testing, and providea constant, hydraulically act

• Turn hydraulic pressure on and off.• Select a control mode.• Manually adjust the actuator position.• Monitor a sensor signal.Related productsSee the

Series 647 Hydraulic Wedge Grips ComponentIdentificationSeries 647 Hydraulic Grip Components16 Series 647 Hydraulic Wedge Grips Reference ManualIntrod

DescriptionItemDescriptionItemAll Temperature GripsBAxial GripsAWater Cooling Lines13Load Unit Crosshead1Upper Grip Assembly14Force Transducer2Environ

DescriptionItemhydraulic grip supply. Each grip has two hydraulic lines connected toit; a hydraulic pressure port and a hydraulic return port.Contacts

DescriptionItemAllows axial-torsional grips to be mounted to a force transducer. Theadapter provides the thread needed to use the couplings.• Adapter

© 2013 MTS Systems Corporation. All rights reserved.Original Instructions (English): 100-027-131 NTrademark InformationMTS, be certain., Bionix, Elast

DescriptionItemDescriptionItemCylinder13Wedges3Grip Piston14Specimen Guide (flat specimensonly)4Preload Chamber15Wedge Chamber5End Cap16Hydraulic Rele

• Smooth surfaces can grip specimens that cannot tolerate imperfections on the grip surface. This surfacealso has a lower force rating.Water-cooled we

About Environmental ChambersThe grips can be mounted for room temperature testing or testing in an environmental chamber. Thetemperature range of the

Hydraulic Fluid RecommendationsAll frame mounted 3000 psi and 10,000 psi grip supplies use standard Mobile DTE-25 hydraulic fluid fromthe HPU. The gri

Series 647 Hydraulic Wedge Grip Force andTorque CapacitiesThe amount of torque the grips can produce is reduced with biaxial operation. The amount of

Model 647.02B Grip Maximum Torque versus Axial LoadSeries 647 Hydraulic Wedge Grips Reference Manual 25Introduction

Model 647.10 Grip Maximum Torque versus Axial Load26 Series 647 Hydraulic Wedge Grips Reference ManualIntroduction

Model 647.25 Grip Maximum Torque versus Axial LoadSeries 647 Hydraulic Wedge Grips Reference Manual 27Introduction

SafetyTopics:•General Safety Practices: Grips and Fixtures...30•G

ContentsTechnical Support 7How to Get Technical Support...

General Safety Practices: Grips and FixturesTypically, grips and fixtures are part of equipment used in MTS testing systems. This section provides gen

Because of these variables (and the possibility of others), your system can operate under unforeseencircumstances that can result in an operating envi

Know facility safe proceduresMost facilities have internal procedures and rules regarding safe practices within the facility. Be aware ofthese safe pr

Check bolt ratings and torquesTo ensure a reliable product, fasteners (such as bolts and tie rods) used in MTS-manufactured systems aretorqued to spec

Provide means to access out-of-reach componentsMake sure you can access system components that might be out of reach while standing on the floor. Fore

Stay alertAvoid long periods of work without adequate rest. In addition, avoid long periods of repetitious, unvarying, ormonotonous work because these

• Use protective gear (such as gloves) if it is necessary to handle hot objects. Hot objects can includespecimens tested at elevated temperatures or f

InstallationTopics:•Series 647 Hydraulic Grip Lift Points...

Series 647 Hydraulic Grip Lift Points647.01 through 647.100DescriptionItemTwo holes 180° apartAThreadModelNone. Lift by hand.647.01/02M10 X 1.5 5/8” D

647.250DescriptionItemBottom ViewAInstall Axial GripsAbout the Installation of Axial GripsGrip installation in a load unit force train involves attach

Practice good housekeeping...33Do not exceed the M

Axial Grip Installation ComponentsDescriptionItemCrosshead or Force Transducer1Spiral Washer Set2Stud3Shim Washer4Shim Washer5Actuator Rod6Load Unit B

• Appropriately sized double swivel eyebolts, adequately sized wood blocks and plywood sheet (or equivalent),and an appropriately sized lifting device

Approx.full turn(360º)ShimNumberThicknessQtyApprox.1/16 turn(22.5º)ShimNumberThicknessQtyApprox.1/8 turn(45º)ShimNumberThicknessQtyApprox.1/4 turn(90º

2. Mount the lower grip to the actuator piston rod. Thread the stud into the lower grip. The connector studshould turn freely. If any resistance is en

You might need to insert the double swivel eyebolts into the threaded holes on the grip chamber. Attacha lifting device to the double swivel eyebolts

Axial-Torsional Grip Installation ComponentsDescriptionItemDescriptionItemCrosshead10Adapter1Force Transducer11Socket Head Cap Screw2Left Hand Thread1

• Lubricant.• Appropriately sized double swivel eyebolts, adequately sized wood blocks and plywood sheet (or equivalent),and an appropriately sized li

a) Remove the socket head cap screws from the lower coupling and place the screws and coupling halveswithin easy reach and oriented properly for insta

3.Warning:The upper grips are very top heavy and will have a tendency to tip over when lifted by thedouble swivel eyebolts.Dropped grips can cause inj

DescriptionItemDescriptionItemWood Block7Load Unit Crosshead1Lower Grip8Force Transducer2Lower Coupling9Adapter Plate3Actuator Piston Rod10Upper Coupl

About Grip Pressure Determination...79Determine Gripping Press

DescriptionItemNumbers show the rotation pattern.1Full (100%) torque listed here.25. Connect the hydraulics.Using the provided hydraulic hoses, make c

• If the environmental chamber has upper and lower U-plugs, install the grips first, then install theenvironmental chamber. Simply remove the U-plugs

Environmental chambers that have U-plugs can be installed after the grips are installed. The following figureshows the components used for most instal

DescriptionItemDescriptionItemSpiral Washer Set91.Warning:Grip installation is dangerous because it occurs within the crush zone of the force train wh

f) Turn the hydraulic pressure off.Ensure that system hydraulic pressure has been reduced to zero before proceeding. To do this, turnoff the hydraulic

Turn the hydraulic pressure off. Ensure that system hydraulic pressure has been reduced to zero beforeproceeding. To do this, turn off the hydraulic p

All-Temperature Grip Component AssembliesDescriptionItemDescriptionItemEye Bolt Holes (2)5Hydraulic Chamber1Wedge Chamber6Cylinder2Socket Head Bolt7Pi

AssembledWeightHydraulicChamberPistonExtensionCylinderWedgeChamberLocationModel64 kg (142 lb)16 kg (34 lb)12 kg (26 lb)5 kg (11 lb)24 kg (52 lb)bottom

b) If necessary, remove the wedges from each grip. Go to “Change Wedges 647.02 - 647.100” and returnto this procedure when done.c) Separate the hydrau

d) Turn on hydraulic pressure and raise the actuator rod until it just makes contact with the connectorstud. Reposition the grip, as necessary, to cen

DescriptionItemDescriptionItemSpiral Washers6Load Unit Crosshead1Wood Block7Force Transducer2Load Unit Columns8Connector Stud3Actuator Rod9Hydraulic C

6. Install the cylinder assemblies and piston extensions.Once the hydraulic chambers of the grips and the environmental chamber are installed, the cyl

DescriptionItemDescriptionItemLower Hydraulic Chamber6Piston Extension3b) Lubricate the threads and the interior wall of the cylinder.c) Position the

DescriptionItemDescriptionItemLower Wedge Chamber3b) Attach a lifting strap to the eye bolts.Note:Ensure that you stabilize the wedge assembly while y

Note:Ensure that you stabilize the wedge assembly while you install it.d) Position the upper wedge assembly in the environmental chamber, using a lift

Note:Two water manifolds are supplied, one for each grip. Mount a water manifold on each column tokeep the temperature of each column balanced.a) Moun

Install Extension RodsAbout Extension Rod InstallationThe Series 647 Hydraulic Wedge Grips can have extension rods mounted so that the grips can be in

DescriptionItemDescriptionItemUpper Extension Rod11Shim Washer2To Water Valve12Spiral Washer Set3Water to Lower Extension Rod13Environmental Chamber T

b) Adjust the actuator and crosshead position as necessary to allow adequate room to install theenvironmental chamber and grips.c) Turn the hydraulic

a) Thread the stud into the lower extension rod. The connector stud should turn freely. If any resistanceis encountered, disassemble and correct the p

Technical SupportHow to Get Technical SupportStart with your manualsThe manuals supplied by MTS provide most of the information you need to use and ma

Note:The upper grip might need help to balance it on the wooden spacer on the lower grip.d) Carefully position the grip on top of the wooden spacer on

7. Install the cooling water lines.a) Mount the cooling water valve clamp to a load unit column.b) Connect the cooling water lines to the extension ro

Grip Rotations and Shim Part NumberKit PartNumber1 Turn (360°)1/2 Turn (180°)1/4 Turn (90°)1/8 Turn (45°)1/16 Turn(22.5°)443665-21443665-19443665-2044

6.Warning:Performing the next step can apply a force greater than the force train capacity.Exceeding the tensile load capacity of any element in the f

DescriptionItemDescriptionItemIncrease Thickness4Connector Stud1Connector Stud5Medium Thickness230 deg. (Do Not Exceed)6Decrease Thickness3Grip Water

DescriptionItemDetail "B" - Applies to ReturnBHoses to water service1Series 647 Hydraulic Wedge Grips Reference Manual 75Installation

OperationTopics:•Basic Operation...

Basic OperationOperation of the hydraulic wedge grips consists of the following:• Determine the minimum required specimen gripping pressure to accommo

DescriptionItemHydraulic Grip Supply3Determine Gripping PressureAbout Grip Pressure DeterminationThe output pressure of the hydraulic grip supply dete

When you have more than one MTS system, the system job number identifies your system. You can findyour job number in your order paperwork.Example syst

DefinintionTermDiameter of the round specimen (mm or in) (see “Specifications”)DLateral clamping force of the wedge on the specimen (kN or lb)FcFricti

Gripping PrinciplesDescriptionItemWedges for Round Specimens1Wedges for Flat Specimens2Determine Gripping Pressure - Axial for Round Specimens (andAxi

For monotonic testing:For fatigue testing:3.If desired, determine the actual clamping force (Fc) applied to the specimen by using the following formul

Change/Install WedgesChange Model 647.02 - 647.100 WedgesStandard and optional wedges are available for the grips. The standard wedges include:• Narro

2. Using the utility packing hook, disconnect both springs from the spring posts on the corresponding wedge.It is not necessary to remove the springs

2. Remove the specimen guide from flat wedges.3. Remove the wedge set from the grip as follows:a) Using the utility packing hook, disconnect both spri

DescriptionItemRebar specimen1Aluminum insert2Wedge3Install Model 647.250 Wedges and LinersSeveral different wedges are available for the Model 647.25

Caution:The wedges can rust.Over time, rust can damage the wedges.Use cloth or latex gloves when handling the wedges. Also coat the wedges with LPS (a

Install/Remove Test SpecimenInstall a SpecimenPrerequisite steps for installation.• Before installing the specimen, install the appropriate set of wed

6.Caution:The contact area between the wedge face and specimen should be as large as possible.A small contact area between the wedge face and specimen

If You Contact MTS by PhoneA Call Center agent registers your call before connecting you with a technical support specialist. The agentasks you for yo

7. Extend the actuator until the specimen is positioned in the upper grip allowing a space of at least 3 mm(0.12 in) but not greater than 6 mm (0.25 i

Warning:The environmental chamber and the grips can be subjected to extreme temperatures during thetest. Opening the door after a test will vent the h

MaintenanceTopics:•Hydraulic Hoses and Fittings...

Hydraulic Hoses and FittingsCheck the hydraulic hoses and fittings monthly. Ensure that hoses are routed properly and not wearing. Alsoensure fittings

100-027-131 N